I recently replaced my Gigabyte Nvidia Geforce FX 5200 128mb with a ASUS ATI Radeon 9800XT. I did the same thing and uninstalled old drivers before putting in the new card and installing the latest Radeon Driver. I am experiencing really bad frame rates for this card and they are not much better than the 5200 if not worse. I have tried driver cleaner pro and removed all traces of nvidia drivers but still no result.
Gigabyte Ga-8IPE1000 Pro 2 Motherbard
P4 3.0 Ghz HT
512 DDR Ram
Asus ATI Radeon 9800XT
Gigabyte Ga-8IPE1000 Pro 2 Motherbard
P4 3.0 Ghz HT
512 DDR Ram
Asus ATI Radeon 9800XT